Converts from medium- to large-size check-in bag (62 linear in.) when expanded 3 inches. Stays within airlines’ check-in size restrictions of 62 linear inches. Super light polypropylene shell is kid-proof and airline-proof, built to prevent punctures or cracks. Built-in lock lets TSA authorities open, inspect, and relock the bag when needed (default code set at 0-0-0). Lining and expansion fabric are made from 15 ½ entirely post-consumer recycled plastic bottles, keeping waste out of landfills and the environment. Water-resistant inside pocket keeps damp or dirty clothing from stinking up everything else inside. 8 Spinner wheels rotate 360° and roll effortlessly, no push back. Lightweight, adjustable aluminum handle has 2 locking heights (38” and 41”), so everyone can push their own bag. Overall Dimensions: H 28 in x W 19 in x D 13 in. Case Dimensions: H 25 in x W 17 in x D 13 in. Weight: 8.2 lbs. 10 Year Limited Warranty.